Pepper_47_C++_interfaces
var_array_buffer.cc
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
6 
7 #include <limits>
8 
9 #include "ppapi/c/ppb_var_array_buffer.h"
10 #include "ppapi/cpp/logging.h"
11 #include "ppapi/cpp/module_impl.h"
12 
13 namespace pp {
14 
15 namespace {
16 
17 template <> const char* interface_name<PPB_VarArrayBuffer_1_0>() {
18  return PPB_VAR_ARRAY_BUFFER_INTERFACE_1_0;
19 }
20 
21 } // namespace
22 
24  ConstructWithSize(0);
25 }
26 
28  if (!var.is_array_buffer()) {
29  PP_NOTREACHED();
30  var_ = PP_MakeNull();
31  }
32 }
33 
34 VarArrayBuffer::VarArrayBuffer(uint32_t size_in_bytes) {
35  ConstructWithSize(size_in_bytes);
36 }
37 
39  Var::operator=(other);
40  return *this;
41 }
42 
44  if (other.is_array_buffer()) {
45  return Var::operator=(other);
46  } else {
47  PP_NOTREACHED();
48  return *this;
49  }
50 }
51 
52 uint32_t VarArrayBuffer::ByteLength() const {
53  uint32_t byte_length = std::numeric_limits<uint32_t>::max();
54  if (is_array_buffer() && has_interface<PPB_VarArrayBuffer_1_0>())
55  get_interface<PPB_VarArrayBuffer_1_0>()->ByteLength(var_, &byte_length);
56  else
57  PP_NOTREACHED();
58  return byte_length;
59 }
60 
62  if (is_array_buffer() && has_interface<PPB_VarArrayBuffer_1_0>())
63  return get_interface<PPB_VarArrayBuffer_1_0>()->Map(var_);
64  PP_NOTREACHED();
65  return NULL;
66 }
67 
69  if (is_array_buffer() && has_interface<PPB_VarArrayBuffer_1_0>())
70  get_interface<PPB_VarArrayBuffer_1_0>()->Unmap(var_);
71  else
72  PP_NOTREACHED();
73 }
74 
75 
76 void VarArrayBuffer::ConstructWithSize(uint32_t size_in_bytes) {
78 
79  if (has_interface<PPB_VarArrayBuffer_1_0>()) {
80  var_ = get_interface<PPB_VarArrayBuffer_1_0>()->Create(size_in_bytes);
81  } else {
82  PP_NOTREACHED();
83  var_ = PP_MakeNull();
84  }
85  is_managed_ = true;
86 }
87 
88 } // namespace pp
virtual Var & operator=(const Var &other)
Definition: var.cc:176
uint32_t ByteLength() const
bool is_array_buffer() const
This function determines if this Var is an ArrayBuffer.
Definition: var.h:175
VarArrayBuffer & operator=(const VarArrayBuffer &other)
#define PP_NOTREACHED()
Definition: logging.h:32
#define PP_DCHECK(a)
Definition: logging.h:16
bool is_undefined() const
Definition: var.h:108
bool is_managed_
Definition: var.h:312
A generic type used for passing data types between the module and the page.
Definition: var.h:21
PP_Var var_
Definition: var.h:308